This VCO with discrete components was found documentation from the 1980s. The central frequency with the indicated components is 8 kHz. A BC548 can be used for Q1.
The output of this super-regenerative circuit must be connected to an audio amplifier. The coil...
This simple medium wave receiver with a transistor can employ any type of general-purpose...
B21126E) This circuit was taken from an old Popular Electronics. The circuit can have its...